Reparing sheetrock

We have removed wallpaper from sheetrock, and large sections of the sheetrock paper came with it. We knew this was a problem, but the wallpaper was coming down, and we could not paint over. Basically, we have refloated and that came out better than expected. I have a related question. Should we have primed that torn up sheetrock with anything before floating, and if so, with what?

Reparing sheetrock

I agree about priming after coating. 'Priming before' also causes the compound to take much longer to dry since it keeps the moisture in the mud.
Even when we do repairs (Water damaged ceilings) we prime after it's patched and coated (aka -'floated'). Priming and stain killing first makes it difficult for the compound to stick to the surface of the area...

Reparing sheetrock

I've done hundreds of drywall repairs and floated entire homes (walls and ceilings) without any primer and never had a problem.

Just my experience but I wouldn't worry about it.

Quote:

Originally Posted by AtlanticWBConst.

I agree about priming after coating. 'Priming before' also causes the compound to take much longer to dry since it keeps the moisture in the mud.
Even when we do repairs (Water damaged ceilings) we prime after it's patched and coated (aka -'floated'). Priming and stain killing first makes it difficult for the compound to stick to the surface of the area...

Seriously guys, if this was just a "should I prime before patching" maybe it wouldn't matter, or for a water damage repair or a patch of almost any sort

But this is a wallpaper removal with massive sheetrock "paper" damage/missing

Just slapping the mud on this is just begging for trouble
You might "get away with it" a few times
But I can not recommend it
The chance of failure is too high

Damaged substrate of this nature requires a specific sealer before mudding
Oil-based primer should work OK, but why bother, Gardz is better

Yes, I can understand the concept of priming and 'sealing' the surface prior to coating - or as they say 'floating' in some parts of the country... Wallpapered areas with a mess left on the walls can ruin any taping or coating work that is done 'over it'....So, yes i can see your advice regarding the practice of priming 'before'...makes sense now...

Reparing sheetrock

Thanks for all the input. I wish I would have found this forum before undertaking the job, but so far, I think we got lucky. It came out OK, but massive numbers of bubbles and blisters after the first coat or two of mud. None now after priming and painting.